West Highland Flora

ID: Sepals completely concealed by two overlapping and
much inflated bracts (pic on left). Flowers white, with or without
pink stripes on the outside.

Other features: Bracts are about as broad as long, unlike in
C pulchra. Stamens thickly
gland-hairy in the lower half and c 3-3.5 mm wide near the base. In
C sepium they are 1-1.5 mm wide and
have a few gland-hairs, in C pulchra they are intermediate.